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| author | Alan Modra <amodra@gmail.com> | 2017-06-23 20:39:43 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-06-23 20:39:43 +0930 |
| commit | 7ee7ff7015840f2d0156bf386a050bd728d22fc4 (patch) | |
| tree | 3e12dac4d7ecf1c5df4748be3365e140a8058e5a /elfcpp | |
| parent | 7e57d19e48f94ff9a19a9413cf25d1887e3a7f52 (diff) | |
| download | gdb-7ee7ff7015840f2d0156bf386a050bd728d22fc4.zip gdb-7ee7ff7015840f2d0156bf386a050bd728d22fc4.tar.gz gdb-7ee7ff7015840f2d0156bf386a050bd728d22fc4.tar.bz2 | |
[GOLD] PowerPC64 localentry:0 plt call optimization
elfcpp/
* elfcpp.h (DT_PPC64_OPT): Define.
* powerpc.h (PPC64_OPT_TLS, PPC64_OPT_MULTI_TOC,
PPC64_OPT_LOCALENTRY): Define.
gold/
* options.h (General_options): Add plt_localentry.
* powerpc.cc (Target_powerpc::st_other): New function.
(Target_powerpc::plt_localentry0_, plt_localentry0_init_,
has_localentry0_): New vars.
(Target_powerpc::plt_localentry0, set_has_localentry0,
is_elfv2_localentry0): New functions.
(Target_powerpc::Branch_info::mark_pltcall): Don't set tocsave or
return true for localentry:0 calls.
(Stub_table::Plt_stub_ent::localentry0_): New var.
(Stub_table::add_plt_call_entry): Set localentry0_ and has_localentry0_.
Don't set r2save_ for localentry:0 calls.
(Output_data_glink::do_write): Save r2 in __glink_PLTresolve for elfv2.
(Target_powerpc::scan_relocs): Default plt_localentry0_.
(Target_powerpc::do_finalize_sections): Set DT_PPC64_OPT.
(Target_powerpc::Relocate::relocate): Don't require nop following
calls for localentry:0 plt calls, and don't change nop.
Diffstat (limited to 'elfcpp')
| -rw-r--r-- | elfcpp/ChangeLog | 6 | ||||
| -rw-r--r-- | elfcpp/elfcpp.h | 3 | ||||
| -rw-r--r-- | elfcpp/powerpc.h | 8 |
3 files changed, 17 insertions, 0 deletions
diff --git a/elfcpp/ChangeLog b/elfcpp/ChangeLog index 6a61d61..0be1bcb 100644 --- a/elfcpp/ChangeLog +++ b/elfcpp/ChangeLog @@ -1,3 +1,9 @@ +2017-06-21 Alan Modra <amodra@gmail.com> + + * elfcpp.h (DT_PPC64_OPT): Define. + * powerpc.h (PPC64_OPT_TLS, PPC64_OPT_MULTI_TOC, + PPC64_OPT_LOCALENTRY): Define. + 2017-01-02 Alan Modra <amodra@gmail.com> Update year range in copyright notice of all files. diff --git a/elfcpp/elfcpp.h b/elfcpp/elfcpp.h index 82eb37f..a57f547 100644 --- a/elfcpp/elfcpp.h +++ b/elfcpp/elfcpp.h @@ -775,6 +775,9 @@ enum DT DT_PPC64_OPD = 0x70000001, DT_PPC64_OPDSZ = 0x70000002, + // Specify whether various optimisations are possible. + DT_PPC64_OPT = 0x70000003, + // The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB // symbol table. One dynamic entry exists for every STT_SPARC_REGISTER // symbol in the symbol table. diff --git a/elfcpp/powerpc.h b/elfcpp/powerpc.h index 99647bd..3dc0828 100644 --- a/elfcpp/powerpc.h +++ b/elfcpp/powerpc.h @@ -228,6 +228,14 @@ enum EF_PPC64_ABI = 3 }; +// DT_PPC64_OPT bits +enum +{ + PPC64_OPT_TLS = 1, + PPC64_OPT_MULTI_TOC = 2, + PPC64_OPT_LOCALENTRY = 4 +}; + enum { // The ELFv2 ABI uses three bits in the symbol st_other field of a |